Since the system update done yesterday, 2/21/2011, I have a new phone status symbol on top of the screen. It looks similar to Wi-Fi but in different shape and orientation. I cannot find it in the manual either. What is it?

Since the system update done yesterday, 2/21/2011, I have a new phone status symbol on top of the screen. It looks similar to Wi-Fi but in different shape and orientation. I cannot find it in the manual either. What is it?